i just built minimo and cellwriter for the freerunner (gta02), which went surprisingly well ...
the hardes part was finding the packages afterwards.
i put them into two tar-balls, *dbg, *-dev, *-doc and the runtime one.
links see below.
how cellwriter is supposed to replace the keyboard i don't know and with minimo there's always 1/3 of the screen occupied by the keyboard.
it's sufficient to add "keyboard" to /etc/matchbox/session
matchbox-panel-2 --start-applets systray,startup \
anel-bt,openmoko-panel-memory,openmoko-panel-wifi --titlebar &
after reboot or restart X it will give you a tiny keyboard icon in the upper right corner.